#ifndef UART_APP_H
#define UART_APP_H

#include "uart_register.h"
#include "eagle_soc.h"
#include "c_types.h"

#define RX_BUFF_SIZE    256
#define TX_BUFF_SIZE    100
#define UART0   0
#define UART1   1

typedef enum {
	FIVE_BITS = 0x0,
	SIX_BITS = 0x1,
	SEVEN_BITS = 0x2,
	EIGHT_BITS = 0x3
} UartBitsNum4Char;

typedef enum {
	ONE_STOP_BIT             = 0,
	ONE_HALF_STOP_BIT        = BIT2,
	TWO_STOP_BIT             = BIT2
} UartStopBitsNum;

typedef enum {
	NONE_BITS = 0,
	ODD_BITS   = 0,
	EVEN_BITS = BIT4
} UartParityMode;

typedef enum {
	STICK_PARITY_DIS   = 0,
	STICK_PARITY_EN    = BIT3 | BIT5
} UartExistParity;

typedef enum {
	BIT_RATE_9600     = 9600,
	BIT_RATE_19200   = 19200,
	BIT_RATE_38400   = 38400,
	BIT_RATE_57600   = 57600,
	BIT_RATE_74880   = 74880,
	BIT_RATE_115200 = 115200,
	BIT_RATE_230400 = 230400,
	BIT_RATE_460800 = 460800,
	BIT_RATE_921600 = 921600
} UartBautRate;

typedef enum {
	NONE_CTRL,
	HARDWARE_CTRL,
	XON_XOFF_CTRL
} UartFlowCtrl;

typedef enum {
	EMPTY,
	UNDER_WRITE,
	WRITE_OVER
} RcvMsgBuffState;

typedef struct {
	uint32     RcvBuffSize;
	uint8     *pRcvMsgBuff;
	uint8     *pWritePos;
	uint8     *pReadPos;
	uint8      TrigLvl; //JLU: may need to pad
	RcvMsgBuffState  BuffState;
} RcvMsgBuff;

typedef struct {
	uint32   TrxBuffSize;
	uint8   *pTrxBuff;
} TrxMsgBuff;

typedef enum {
	BAUD_RATE_DET,
	WAIT_SYNC_FRM,
	SRCH_MSG_HEAD,
	RCV_MSG_BODY,
	RCV_ESC_CHAR,
} RcvMsgState;

typedef struct {
	UartBautRate 	     baut_rate;
	UartBitsNum4Char  data_bits;
	UartExistParity      exist_parity;
	UartParityMode 	    parity;    // chip size in byte
	UartStopBitsNum   stop_bits;
	UartFlowCtrl         flow_ctrl;
	RcvMsgBuff          rcv_buff;
	TrxMsgBuff           trx_buff;
	RcvMsgState        rcv_state;
	int                      received;
	int                      buff_uart_no;  //indicate which uart use tx/rx buffer
} UartDevice;

void uart_init(UartBautRate uart0_br, UartBautRate uart1_br);
void uart0_sendStr(const char *str);

#endif

